All is not what it seems here .......
No 1233 is not a Leyland Tiger Cub at all.
It is in fact a Leyland Olympian, and one of 40 identical buses delivered in 1956, when the mass arrival of the 180 Weymann-bodied Tiger Cubs was still in full swing. These Olympians carried fleet numbers 1200-1239, and were registered LKG 200-239.
This photo was taken sometime in the mid-1960s, judging by the newer WW front motif, the 'boxed' WW side fleetname, and all-over dark red livery. Operational economies dictated the abolition of the cream waistbands with black lining-out. The location was Carmarthen, and judging by the destination display, 1233 was working on one of the town services, and would have therefore carried a green diamond.
The Olympian was a chassis-less version of the Tiger Cub, being a joint venture between Leyland Motors and Weymanns. The basic idea was to reduce the vehicle's unladen weight, and thereby increase fuel economy and improve operating costs. In reality, there was relatively little reduction in the unladen weight, and I distinctly recall that the Weymann-bodied Tiger Cubs tipped the scales at 5 tons, 14 cwt; 1 qt; unladen.
Although Western Welsh took more Olympians into stock in smaller numbers over the ensuing years, the Tiger Cub adequately satisfied the companies' requirements, and continued to be ordered in quantity right up until 1968.